This volume of the Encyclopædia Britannica opens with an exhaustive treatise on harmony, tracing its evolution from ancient Greek scales and medieval organum to modern diatonic and chromatic systems. It explores the principles of concord and discord, tonality, the minor mode, key-relationships, and temperament, providing a deep analytical foundation for musical theory.
The biographical section comprises numerous concise entries on notable historical figures, writers, scientists, and statesmen. Among these are the English king Harold the Second, the German theologian Adolf Harnack, the great Eastern conqueror Harun al-Rashid, and the naval hero Admiral Sir John Hawkins. Each biographical sketch outlines the subject's life, career, and historical significance with scholarly precision.
Geographical and topographical articles provide detailed surveys of cities, regions, and natural features across the globe. Locations such as Harrogate, Harrow, Havana, Hawaii, and the Himalayas are described in terms of their physical characteristics, history, and economic importance. These entries serve as valuable historical snapshots of geographical knowledge prior to the First World War.
Scientific and technical subjects are also largely represented, with thorough examinations of topics like heat, the heart, and the harp. The article on the harp traces its history from ancient Egyptian instruments to the modern pedal harp. Other specialized entries cover various branches of science, literature, and general information, reflecting the vast scope of the Britannica.
Throughout the volume, the contributions of leading scholars and specialists of the era are carefully attributed. The text maintains the high editorial standards of the eleventh edition, offering a rich repository of accumulated learning. It remains an essential historical record of scholarship, thought, and culture at the dawn of the twentieth century.